| Texto completo | |
| Autor(es): |
Castelano, L. K.
;
Fanchini, F. F.
;
Berrada, K.
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW B; v. 94, n. 23, p. 5-pg., 2016-12-23. |
| Resumo | |
We develop a theoretical model to describe the dissipative dynamics of singlet-triplet qubits in GaAs quantum dots. Using the concurrence experimentally obtained [Shulman et al., Science 336, 202 (2012)] as a guide, we assume that each logical qubit fluctuates under the action of a random telegraph noise (RTN) that simulates the 1/f(alpha) noise. We also study the dynamics of concurrence as a function of the amplitude of the RTN, the correlation time of the RTN, the preparation time of states, and the two-qubit coupling. Furthermore, we show that the two-qubit coupling together with the preparation time strongly affect the entanglement dissipative dynamics and both physical quantities can be employed to enhance the entanglement between singlet-triplet qubits. (AU) | |
| Processo FAPESP: | 15/05581-7 - Controle quântico em sistemas dissipativos |
| Beneficiário: | Felipe Fernandes Fanchini |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 12/13052-6 - Propriedades de transporte e computação quântica em nanoestruturas |
| Beneficiário: | Leonardo Kleber Castelano |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |